>and the galaxy saw [...] that even the Emperor's greatest enforcer can be hurt.
I like how even the leading Rebel figures who watched the fight, the ones ALREADY fighting the Empire, came away with the disheartening conclusion that "if even the great and venerable Lady Qi'ra couldn't hope to beat Vader, what chance do we have?", but meanwhile Queera is under some delusion that her getting completely trounced can become a symbol of inspiration and of proof that the Empire can be beaten.
>Vader won't kill Han. He's too valuable a rebel target
What the fuck does that mean? Him being a prominent Rebel is a REASON to kill him. Unless Vader plans to use him as bait to draw other Rebels into a trap, except he just did exactly that and wound up accomplishing nothing but looking like a fool for having his bluff called.